Hello Guest, Welcome to Apnea Board !
As a guest, you are limited to certain areas of the board and there are some features you can't use.
To post a message, you must create a free account using a valid email address.

or Create an Account


New Posts   Today's Posts

Test for foam residue ?
#1
Test for foam residue ?
I was thinking about the crap I found in the airbox of my dreamstation, and wondering how someone could 'test' their unit but without taking it apart (breakage hazard involved in that).

What if you removed the humidifier, and swabbed a qtip around the air port ?
Mine had black soot-ish stuff near the blower exit (the inside of that port), but I didn't try swabbing from the outside.
I would think any black that shows on a qtip would be confirmation of breakdown.

Thoughts ?
Post Reply Post Reply






Donate to Apnea Board  
#2
RE: Test for foam residue ?
Might not be foam. Might be normal dust/soot. The filters do not filter 100%.
Post Reply Post Reply
#3
RE: Test for foam residue ?
"Might be normal dust/soot"

Hmm, true.   Given enough time and especially with regular intake filters, some kinda "stuff" would be there.
The black foam does seem to leave a black residue, but then it becomes subjective.. how black is it ?   And, soot could be a thing, depending on environmental conditions.  Perhaps a smoker in the house would end up leaving something too.

Then I thought about swabbing and (if the swab comes out black) bringing that into a lab where they could look for specified chemicals that would be a signature of foam breakdown.  The problem there, is Philips has told us what they found on a new machine after approx 25 days of use.  Machines that have run for 4 years might have different breakdown chems ?

I suppose, as a bare minimum, if someone was to swab and it came out nice and clean it could indicate little/no breakdown ?
Post Reply Post Reply
#4
RE: Test for foam residue ?
I've seen some reports of filters in CPAP's getting gray/black due to the smoke of the Western fires. It's possible that some smoke particles could have passed through the fine filter and collected inside the machine. I live on the East coast of the US and we've had smoke from the Western fires in the air which we could smell.

On your DreamStation, open the water tray lid and take a look at the silicone seal on the hinged part of the lid where it would contact the water tray. After a year and a half of use mine had a light black skim on it. No idea if it was something from the foam or some other stuff that may have been in the air and sucked through the filters, but hasn't returned after wiping it clean.
Post Reply Post Reply






Donate to Apnea Board  


Possibly Related Threads...
Thread Author Replies Views Last Post
  The DreamStation Foam Removal Thread brianc18t 98 7,433 10-12-2021, 09:50 PM
Last Post: remseeker
Information NOTICE: New "Home Sleep Test Provider List" SuperSleeper 1 466 09-27-2021, 09:28 PM
Last Post: OpalRose
  Foam Removal - Philips System One peewee44 36 2,564 09-14-2021, 07:53 PM
Last Post: ST Dog
  Dreamstation - Photo of foam 'bits' in airway under blower DaveCar 6 605 09-02-2021, 01:27 PM
Last Post: DaveCar
  Question re: Virtuox Ultra test with RemStar Auto A-Flex tonight. Help, please. Helena 2 134 08-30-2021, 06:57 PM
Last Post: Helena
  Philips foam issue - Sensors might be inaccurate ?? DaveCar 1 237 08-20-2021, 10:32 AM
Last Post: SakimaStorm
  Dreamstation foam filter idea ? DaveCar 1 243 08-15-2021, 11:35 PM
Last Post: aquanaut20


New Posts   Today's Posts






About Apnea Board

Apnea Board is an educational web site designed to empower Sleep Apnea patients.